WO2024089885A1 - Câble et courroie mettant en œuvre un tel câble - Google Patents

Câble et courroie mettant en œuvre un tel câble Download PDF

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Publication number
WO2024089885A1
WO2024089885A1 PCT/JP2022/040427 JP2022040427W WO2024089885A1 WO 2024089885 A1 WO2024089885 A1 WO 2024089885A1 JP 2022040427 W JP2022040427 W JP 2022040427W WO 2024089885 A1 WO2024089885 A1 WO 2024089885A1
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WO
WIPO (PCT)
Prior art keywords
fiber core
layer
rope
resin
strands
Prior art date
Application number
PCT/JP2022/040427
Other languages
English (en)
Japanese (ja)
Inventor
晋也 内藤
紘一 位田
豊弘 野口
淳哉 安富
Original Assignee
三菱電機ビルソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 三菱電機ビルソリューションズ株式会社 filed Critical 三菱電機ビルソリューションズ株式会社
Priority to PCT/JP2022/040427 priority Critical patent/WO2024089885A1/fr
Publication of WO2024089885A1 publication Critical patent/WO2024089885A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables

Definitions

  • This disclosure relates to ropes and belts using the same.
  • each high-strength synthetic fiber bundle is made up of multiple high-strength synthetic fiber filaments.
  • the diameter of each high-strength synthetic fiber filament is several ⁇ m to several tens of ⁇ m.
  • each high-strength synthetic fiber bundle is thin and soft, when multiple high-strength synthetic fiber bundles are loosely twisted together, the cross-sectional shape of the high-strength synthetic fiber core is easily distorted, and the cross-sectional shape of the high-strength synthetic fiber core may become elliptical rather than circular. In that case, the cross-sectional shape of the rope will also become elliptical, which may shorten the rope's lifespan.
  • the present disclosure has been made to solve the problems described above, and aims to provide a rope and a belt using the same that can stabilize the cross-sectional shape of the fiber core while ensuring a sufficient filling amount of synthetic fibers in the fiber core.
  • the rope according to the present disclosure comprises a fiber core and a plurality of steel strands arranged on the outer periphery of the fiber core, the fiber core having a first layer and a second layer arranged on the outer periphery of the first layer, the first layer having at least one first fiber core strand, the second layer having a plurality of second fiber core strands, each first fiber core strand being formed by a first twisted wire made of synthetic fiber solidified by a first resin, each second fiber core strand being formed by a second twisted wire made of synthetic fiber solidified by a second resin, and the elastic modulus of the first resin being higher than the elastic modulus of the second resin.
  • FIG. 1 is a side view showing an elevator according to embodiment 1.
  • FIG. 2 is a cross-sectional view of the main rope of FIG.
  • FIG. 11 is a cross-sectional view of a main rope according to embodiment 2.
  • FIG. 11 is a cross-sectional view of a main rope according to embodiment 3.
  • FIG. 11 is a cross-sectional view of a main rope according to embodiment 4.
  • FIG. 13 is a cross-sectional view of a main rope according to embodiment 5.
  • FIG. 13 is a cross-sectional view of a main rope according to embodiment 6.
  • FIG. 13 is a cross-sectional view of a belt according to a seventh embodiment.
  • Fig. 1 is a side view showing an elevator according to embodiment 1.
  • a machine room 2 is provided above a hoistway 1.
  • a hoisting machine 3 and a deflector sheave 6 are installed in the machine room 2.
  • the hoist 3 has a hoist body 4 and a drive sheave 5.
  • the hoist body 4 has a hoist motor (not shown) and a hoist brake (not shown).
  • the hoist motor rotates the drive sheave 5.
  • the hoist brake keeps the drive sheave 5 stationary.
  • the hoist brake also brakes the rotation of the drive sheave 5.
  • Each of the multiple main ropes 7 is an elevator rope.
  • the car 8 and counterweight 9 are suspended in the hoistway 1 by multiple main ropes 7.
  • the car 8 and counterweight 9 move up and down in the hoistway 1 by rotating the drive sheave 5.
  • a pair of car guide rails 10 and a pair of counterweight guide rails 11 are installed in the elevator 1. In FIG. 1, only one car guide rail 10 and one counterweight guide rail 11 are shown.
  • a pair of car guide rails 10 guide the car 8 as it rises and falls.
  • a pair of counterweight guide rails 11 guide the counterweight 9 as it rises and falls.
  • the cage 8 has a cage frame 12 and a cage chamber 13. A number of main ropes 7 are connected to the cage frame 12. The cage chamber 13 is supported by the cage frame 12.
  • FIG. 2 is a cross-sectional view of the main rope 7 in FIG. 1, showing a cross section perpendicular to the length of the main rope 7.
  • the main rope 7 in the first embodiment is an 8 ⁇ S(19) type rope conforming to JIS G 3525.
  • the main rope 7 has a fiber core 21 and multiple steel strands 22.
  • eight steel strands 22 are arranged on the outer periphery of the fiber core 21.
  • the eight steel strands 22 are also twisted together on the outer periphery of the fiber core 21.
  • the fiber core 21 is disposed at the center of the cross section perpendicular to the longitudinal direction of the main rope 7.
  • the fiber core 21 also has a first layer 31 and a second layer 32.
  • the first layer 31 in the first embodiment is composed of one first fiber core strand 33.
  • the first fiber core strand 33 is disposed at the center of the fiber core 21 in a cross section perpendicular to the length direction of the fiber core 21.
  • the shape of the first fiber core strand 33 in a cross section perpendicular to the length direction of the fiber core 21 is circular.
  • the second layer 32 is disposed on the outer periphery of the first layer 31.
  • the second layer 32 has a plurality of second fiber core strands 34.
  • eight second fiber core strands 34 are twisted on the outer periphery of the first fiber core strand 33. In this way, the structure of the fiber core 21 is a two-layer twisted structure.
  • the first fiber core strand 33 is constructed by solidifying a first twisted wire made of synthetic fiber with a first resin.
  • Each second fiber core strand 34 is constructed by solidifying a second twisted wire made of synthetic fiber with a second resin.
  • the elastic modulus of the first resin is higher than the elastic modulus of the second resin.
  • Each of the first and second stranded wires is composed of a plurality of yarns twisted in one direction.
  • High strength synthetic fiber yarns are used as at least some of the yarns that compose the first and second stranded wires.
  • the high strength synthetic fiber yarns in the first embodiment are synthetic fiber yarns with a tensile strength of 20 cN/dtex or more and a tensile modulus of elasticity of 500 cN/dtex or more.
  • all of the yarns that compose the first and second stranded wires are the above-mentioned high strength synthetic fiber yarns.
  • Each steel strand 22 has multiple steel wires.
  • the multiple steel wires include a central wire 24, multiple intermediate wires 25, and multiple outer layer wires 26.
  • the central wire 24 is located at the center of a cross section perpendicular to the longitudinal direction of the steel strand 22.
  • the multiple intermediate wires 25 are twisted around the outer periphery of the central wire 24. In this example, nine intermediate wires 25 are used.
  • the multiple outer layer wires 26 are twisted around the outer periphery of an intermediate layer consisting of multiple intermediate wires 25.
  • nine outer layer wires 26 are used. That is, in each steel strand 22, the number of intermediate wires 25 and the number of outer layer wires 26 are the same.
  • each outer layer wire 26 is smaller than the diameter of the central wire 24.
  • the diameter of each intermediate wire 25 is smaller than the diameter of each outer layer wire 26.
  • each steel strand 22 is pressed against the outer circumference of the fiber core 21.
  • the first fiber core strand 33 is formed by solidifying a first strand of synthetic fiber with a first resin.
  • each second fiber core strand 34 is formed by solidifying a second strand of synthetic fiber with a second resin.
  • the elastic modulus of the first resin is higher than the elastic modulus of the second resin. That is, the first fiber core strand 33 is less likely to deform than each of the second fiber core strands 34.
  • the cross-sectional shape of the fiber core can be stabilized, and the cross-sectional shape of the entire main rope 7 can be made close to a perfect circle. This makes it possible to prevent a decrease in the lifespan of the main rope 7.
  • each second fiber core strand 34 is more easily deformed than the first fiber core strand 33. Therefore, each second fiber core strand 34 can deform to a certain extent so as to follow the outer circumference of the first fiber core strand 33, and even in the fiber core 21 with a two-layer structure, gaps are unlikely to occur between each second fiber core strand 34 and the first fiber core strand 33. Also, gaps are unlikely to occur between adjacent second fiber core strands 34.
  • the amount of synthetic fiber filled in the fiber core 21 can be sufficiently ensured, and the fiber core 21 can fully bear the tensile load.
  • the main rope 7 of embodiment 1 can stabilize the cross-sectional shape of the fiber core 21 while ensuring a sufficient amount of synthetic fiber filling in the fiber core 21.
  • the fiber core 21 has a two-ply twisted structure
  • the first fiber core strand 33 and each of the second fiber core strands 34 can be twisted together more loosely than in a fiber core with a three-ply structure. This allows the fiber core 21 to more fully bear the tensile load.
  • the first layer 31 is composed of a single first fiber core strand 33. This simplifies the configuration of the first layer 31, making it easier to manufacture the first layer 31.
  • the yarns that make up the first stranded wire and the second stranded wire are high-strength synthetic fiber yarns. This makes it possible to obtain a lightweight, high-strength main rope 7, which can be easily applied to high-lift elevators.
  • FIG. 3 is a cross-sectional view of the main rope 7 according to a second embodiment, showing a cross section perpendicular to the longitudinal direction of the main rope 7. As shown in FIG.
  • the first layer 31 in the second embodiment is formed by twisting together three first fiber core strands 33.
  • the first layer 31 in the second embodiment is a three-stranded rope.
  • the cross-sectional shape of the three-stranded rope in a cross section perpendicular to the longitudinal direction of the fiber core 21 is circular.
  • a triple-stranded rope is used as the first layer 31. Therefore, the diameter of the first layer 31 can be increased, and the diameter of the fiber core 21 can be increased. This allows the overall diameter of the main rope 7 to be increased.
  • each first stranded wire is solidified with the first resin and then twisted together, the cross-sectional shape of each first stranded wire is less likely to deform, and there are more voids in the triple-stranded rope, which reduces the amount of synthetic fiber filled by the amount of the voids.
  • FIG. 4 is a cross-sectional view of the main rope 7 according to a third embodiment, showing a cross section perpendicular to the longitudinal direction of the main rope 7. As shown in FIG.
  • the main rope 7 of the third embodiment has a fiber core 21, a plurality of steel strands 22, and a resin fiber core covering 35.
  • the fiber core covering 35 covers the outer periphery of the fiber core 21.
  • the plurality of steel strands 22 are arranged on the outer periphery of the fiber core 21 via the fiber core covering 35. In other words, the fiber core covering 35 is interposed between the fiber core 21 and the plurality of steel strands 22.
  • the material for the fiber core coating 35 can be resin or rubber.
  • the material for the fiber core coating 35 can be, for example, polyethylene, polypropylene, polyvinyl chloride, polyamide, or polyurethane elastomer.
  • the fiber core coating 35 is formed around the fiber core 21 by a manufacturing process similar to the process for forming a coating on cables. That is, the fiber core coating 35 is formed around the fiber core 21 by extrusion coating molding with the fiber core 21 at the center.
  • a fiber core sheath 35 is interposed between the fiber core 21 and the multiple steel strands 22. This makes it possible to suppress wear and damage to the fiber core 21, thereby extending the life of the main rope 7.
  • a fiber core coating 35 may be provided on the outer periphery of the fiber core 21 in embodiment 1.
  • FIG. 5 is a cross-sectional view of the main rope 7 according to a fourth embodiment, showing a cross section perpendicular to the longitudinal direction of the main rope 7.
  • each steel strand 22 is compressed from the outside in the radial direction, so that the cross-sectional shape of each outer layer wire 26 perpendicular to the length direction of each steel strand 22 is deformed. As a result, the cross-sectional shape perpendicular to the length direction of each steel strand 22 is made circular.
  • the main rope 7 according to this embodiment 4 also provides the same effect as the embodiment 3.
  • each steel strand 22 in embodiments 1 to 3 may be the same as the steel strand 22 in embodiment 4.
  • FIG. 6 is a cross-sectional view of the main rope 7 according to a fifth embodiment, showing a cross section perpendicular to the longitudinal direction of the main rope 7.
  • the cross-sectional area of the fiber core 21 can be made relatively large compared to the total cross-sectional area of all the steel strands 22. This makes it possible to make the main rope 7 even lighter and stronger.
  • Embodiment 6. 7 is a cross-sectional view of a main rope 7 according to a sixth embodiment, showing a cross section perpendicular to the longitudinal direction of the main rope 7. As shown in FIG.
  • the main rope 7 of the sixth embodiment has a fiber core 21, a plurality of steel strands 22, a fiber core coating 35, and a resin outer coating 36.
  • the outer coating 36 covers the outer periphery of the steel strand layer made up of the plurality of steel strands 22.
  • the material used for the outer periphery coating 36 is an elastomer.
  • an ether-based thermoplastic polyurethane elastomer is preferable.
  • the outer periphery coating 36 may contain a flame retardant. This makes the outer periphery coating 36 flame retardant.
  • the multiple steel strands 22 do not come into direct contact with the drive sheave 5, so wear and damage to the multiple steel strands 22 can be suppressed. In addition, wear and damage to the drive sheave 5 and other pulleys that come into contact with the main rope 7 can also be suppressed.
  • main rope 7 in embodiments 1 to 5 may be provided with an outer circumferential coating 36.
  • Fig. 8 is a cross-sectional view of a belt according to embodiment 7, showing a cross section perpendicular to the length direction of the belt.
  • a belt 41 can be used in place of the main rope 7 of the elevator shown in Fig. 1.
  • the belt 41 has a plurality of ropes 42 and a rope covering 43.
  • the multiple ropes 42 are arranged at equal intervals in the width direction of the belt 41.
  • the width direction of the belt 41 is the left-right direction in FIG. 8. In the seventh embodiment, six ropes 42 are used.
  • each rope 42 is the same as the main rope 7 of embodiment 5 shown in Figure 6.
  • the multiple ropes 42 function as strength members.
  • the rope covering 43 covers the entire group of all the ropes 42. In other words, all the ropes 42 are integrated together by the rope covering 43.
  • An elastomer is used as the material for the rope covering 43. Furthermore, from the viewpoints of high friction, abrasion resistance, and hydrolysis resistance, an ether-based thermoplastic polyurethane elastomer is preferable as the elastomer.
  • the rope covering 43 may contain a flame retardant. This makes the rope covering 43 flame retardant.
  • each rope 42 is stabilized while ensuring a sufficient amount of synthetic fiber filling in the fiber core 21 of each rope 42. This allows the belt 41 as a whole to fully bear the tensile load and to have a long life.
  • the number of ropes 42 included in the belt 41 is not particularly limited, and may be five or less or seven or more.
  • each rope 42 included in the belt 41 may be the same as that of embodiment 1, embodiment 2, embodiment 3, embodiment 4, or embodiment 6.
  • the belt 41 may also include multiple types of ropes 42 that differ from each other in at least one of their configurations and diameters.
  • the belt 41 may also include ropes other than those shown in the first to sixth embodiments.
  • each fiber core 21 may be a multi-layer twisted structure of three or more layers.
  • the elastic modulus of the first resin used in the first fiber core strand of the first layer which is one of the multiple layers, is higher than the elastic modulus of the second resin used in the second fiber core strand of the second layer adjacent to the outside of the first layer, the same effect as above can be obtained.
  • each fiber core strand arranged in the outermost layer of the fiber core 21 may be made into a triple-strand rope.
  • the number of steel strands 22 arranged around the outer periphery of each fiber core 21 can be changed as appropriate and is not limited to 8 or 12.
  • the overall layout of the elevator is not limited to the layout in FIG. 1.
  • the roping system may be a 2:1 roping system.
  • the elevator may also be a machine room-less elevator, a double deck elevator, a one-shaft multi-car elevator, etc.
  • the one-shaft multi-car elevator is a system in which an upper car and a lower car located directly below the upper car each travel independently up and down a common elevator shaft.
  • the rope may also be an elevator rope other than the main rope 7, such as a compensating rope or a governor rope.
  • the belt may also be, for example, a compensating belt used in place of the compensating rope, or a governor belt used in place of the governor rope.
  • the rope is not limited to an elevator rope, but may be a rope used for other purposes, such as a crane rope used in a lifting device.
  • the belt may be a crane belt used in a lifting device.

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  • Ropes Or Cables (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

Dans ce câble, un cœur de fibre (21) comprend une première couche (31) et une seconde couche (32) disposée sur une circonférence externe de la première couche (31). La première couche (31) comprend au moins un premier brin de cœur de fibre (33). La seconde couche (32) comprend une pluralité de seconds brins de cœur de fibre (34). Chaque premier brin de cœur de fibre (33) est formé en rigidifiant un premier fil toronné constitué de fibres synthétiques avec une première résine. Chaque second brin de cœur de fibre (34) est formé en rigidifiant un second fil toronné constitué de fibres synthétiques avec une seconde résine. Le module d'élasticité de la première résine est supérieur au module d'élasticité de la seconde résine.
PCT/JP2022/040427 2022-10-28 2022-10-28 Câble et courroie mettant en œuvre un tel câble WO2024089885A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/040427 WO2024089885A1 (fr) 2022-10-28 2022-10-28 Câble et courroie mettant en œuvre un tel câble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/040427 WO2024089885A1 (fr) 2022-10-28 2022-10-28 Câble et courroie mettant en œuvre un tel câble

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WO2024089885A1 true WO2024089885A1 (fr) 2024-05-02

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5976986A (ja) * 1982-10-23 1984-05-02 日「鉄」ロ−プ工業株式会社 ワイヤロ−プの芯ロ−プ
WO2008023434A1 (fr) * 2006-08-25 2008-02-28 Mitsubishi Electric Corporation Câble d'ascenseur
JP2013032190A (ja) * 2011-08-01 2013-02-14 Mitsubishi Electric Building Techno Service Co Ltd エレベータ用巻上ロープ
JP2014237908A (ja) * 2013-06-07 2014-12-18 株式会社日立製作所 エレベータ用ワイヤロープ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5976986A (ja) * 1982-10-23 1984-05-02 日「鉄」ロ−プ工業株式会社 ワイヤロ−プの芯ロ−プ
WO2008023434A1 (fr) * 2006-08-25 2008-02-28 Mitsubishi Electric Corporation Câble d'ascenseur
JP2013032190A (ja) * 2011-08-01 2013-02-14 Mitsubishi Electric Building Techno Service Co Ltd エレベータ用巻上ロープ
JP2014237908A (ja) * 2013-06-07 2014-12-18 株式会社日立製作所 エレベータ用ワイヤロープ

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